Of the yet-to-be-discovered oil on U.S. federal lands, about half is believed to be in Alaska, according to the new estimate.

Seafloor sensors caught a rare slow quake in action. It hints at how Earth's stress is quietly released. For the first time, ...

A 4.1-magnitude earthquake was reported in Alaska on Thursday (July 3), according to the United States Geological Survey. The ...

A preliminary 2.6-magnitude earthquake struck in the East Bay on Friday, according to the U.S. Geological Survey. The ...

Earthquakes can’t be predicted. But a manga artist’s dream of a July 5 'megaquake' has spooked some residents and travelers.

Learn more about the new hydrothermal feature that appeared last summer in Yellowstone National Park, and how, even though it went dormant over the winter, it could appear again this summer.